Rare earth waste treatment device

Abstract

The application discloses a rare earth waste treatment device, which comprises a shell, a driving member, a rotating shaft, a rotating drum and a cleaning member. The shell is provided with a treatment chamber; the driving member is fixedly connected to the shell; the rotating shaft is connected with the driving member to rotate under the driving of the driving member; the rotating drum is internally provided with an internal space for containing magnetic powder; the rotating drum is at least partially located in the treatment chamber; the rotating shaft passes through the internal space and is fixedly connected with the rotating drum in a coaxial manner; the cleaning member is fixedly connected to the shell; the cleaning member is at least partially located in the internal space, and one end of the cleaning member is in contact with the upper half inner wall of the internal space formed by the rotating drum. The application has the advantages that the rare earth waste treatment device can make full use of magnetism, improve the separation effect and be convenient to maintain.

Description

Technical Field

[0001] This application relates to the field of rare earth processing technology, and more specifically, to a rare earth waste processing device. Background Technology

[0002] A magnetic recovery machine is an industrial device used to separate substances from liquids that can be magnetically adsorbed. For example, in the rare earth industry, it can be used to filter industrial wastewater and separate metal fragments, flocculent matter, and magnetic powder from the liquid. The magnetic recovery machine consists of a chamber formed in the outer shell through which the liquid flows, and a rotating drum inside the chamber, driven by a component such as a motor. There is a gap between the bottom of the drum and the inner wall of the chamber bottom. The drum is generally made of permanent magnet material. During the rotation of the drum, substances such as magnetic powder and flocculent matter are magnetically adsorbed onto the surface of the drum. As the drum rotates, they are lifted off the liquid surface and then scraped off by a scraper for collection. For example, the separated magnetic powder can be collected and reused. The liquid flows through the gap between the bottom of the drum and the inner wall of the chamber bottom and flows out of the chamber, thus achieving the separation of the liquid from the substances to be separated.

[0003] In practical use, it was found that the rotating drum made of permanent magnets is relatively heavy, making maintenance inconvenient. Furthermore, while the magnetic powder is scraped off the drum by the scraper for separation, the powder is re-attracted by the magnetism, causing it to accumulate in large quantities at the scraper. This often requires additional cleaning procedures to remove the accumulated magnetic powder. On the other hand, there are generally gaps between the scraper and the drum, as well as between the inner wall of the chamber and the drum. Accumulation of material in these gaps can easily lead to blockages, severely affecting the normal separation efficiency of the magnetic recovery machine. Summary of the Invention

[0004] The summary section of this application is intended to provide a brief overview of the concepts, which will be described in detail in the detailed description section below. This summary section is not intended to identify key or essential features of the claimed technical solutions, nor is it intended to limit the scope of the claimed technical solutions.

[0005] To address the technical problems mentioned in the background section, this application provides a rare earth waste treatment device, comprising: a shell, a drive unit, a rotating shaft, a rotating drum, and a cleaning unit; wherein, the shell is provided with a treatment chamber; the drive unit is fixedly connected to the shell; the rotating shaft is connected to the drive unit to rotate under the drive of the drive unit; the rotating drum has an internal space for containing magnetic powder; at least a portion of the rotating drum is located within the treatment chamber; the rotating shaft passes through the internal space and is fixedly coaxially connected to the rotating drum; the cleaning unit is fixedly connected to the shell; at least a portion of the cleaning unit is located within the internal space, and one end of the cleaning unit contacts the upper half of the inner wall of the internal space formed by the rotating drum.

[0006] In some embodiments, the rare earth waste treatment apparatus further includes: a connecting component; wherein the connecting component is fixedly connected to the housing; and a cleaning component is connected to the connecting component to fix the cleaning component to the housing.

[0007] In some embodiments, the connecting assembly includes: a hollow shaft and a connecting rod; wherein the hollow shaft is sleeved outside the rotating shaft; the connecting rod is formed around the hollow shaft / fixedly connected to the hollow shaft; the hollow shaft is fixedly connected to the housing; one end of the connecting rod is provided with a connecting portion; the other end of the cleaning component, which is opposite to one end of the contacting inner wall of the rotating drum, is provided with a mating portion; the mating portion and the connecting portion are fitted together so that the connecting assembly and the cleaning component form a detachable fixed connection.

[0008] In some embodiments, the length direction of the connecting rod is parallel to the radial direction of the rotating drum; the cleaning component is connected to the end of the connecting rod away from the hollow shaft along its length direction; the angle between the length direction of the connecting rod and the horizontal direction ranges from 45° to 70°.

[0009] In some embodiments, the connecting assembly further includes: a guide; wherein the guide is formed / fixed between the hollow shaft and the connecting rod; the guide has a first end in contact with the cleaning member, a second end located below the first end, and a guide surface formed between the first end and the second end; the guide surface is located below the cleaning member.

[0010] In some embodiments, the rare earth waste treatment apparatus further includes an elastic element; wherein the elastic element is disposed between the connecting portion and the mating portion.

[0011] In some embodiments, the rare earth waste treatment device further includes: a fixing member; wherein the internal space is open at a first side end of the outer shell; the fixing member is fixedly connected to the outer shell; the fixing member is rotatably connected to the first side end of the rotating drum; the fixing member is provided with a through hole communicating with the internal space; and a cleaning member is inserted into the internal space through the through hole.

[0012] In some embodiments, the drive element is located at a second side end of the housing opposite to the first side end.

[0013] In some embodiments, the inner side of the fixing member is provided with an annular oil storage cavity and a sealing cavity; the annular oil storage cavity is connected to the side of the sealing cavity away from the driving member; a sealing ring is fixedly disposed in the sealing cavity.

[0014] In some embodiments, the outer casing is provided with an inlet and an outlet at opposite ends, which communicate with the processing chamber; a blocking portion is provided at the end of the bottom inner wall of the outer casing near the inlet; the blocking portion is located on the side of the outer casing near the fixing member, and the blocking portion is located on the side of the sealing cavity away from the annular oil storage cavity.

[0015] The beneficial effects of this application are: it provides a rare earth waste treatment device that can achieve more complete magnetism, thereby improving the separation effect and is easy to maintain. Attached Figure Description

[0016] The accompanying drawings, which form part of this application, are used to provide a further understanding of the application and to make other features, objects, and advantages of the application more apparent. The illustrative embodiments and descriptions of this application are used to explain the application and do not constitute an undue limitation of the application.

[0017] Furthermore, throughout the accompanying drawings, the same or similar reference numerals denote the same or similar elements. It should be understood that the drawings are schematic, and the elements are not necessarily drawn to scale.

[0018] In the attached diagram:

[0019] Figure 1 This is a schematic diagram of the overall structure of a rare earth waste treatment device according to some embodiments of this application;

[0020] Figure 2 for Figure 1 A schematic diagram of the rare earth waste treatment device from another perspective.

[0021] Figure 3 for Figure 1 A cross-sectional view of the rare earth waste treatment device shown from a first-view perspective.

[0022] Figure 4 yes Figure 3 A magnified view of part A in the middle;

[0023] Figure 5 yes Figure 4 A magnified view of part B in the middle section;

[0024] Figure 6 for Figure 1 A cross-sectional view of the rare earth waste treatment device shown from a second perspective.

[0025] Figure 7 for Figure 1 A cross-sectional view of the rare earth waste treatment device shown from a third-angle perspective.

[0026] Figure 8 yes Figure 7 A magnified view of part C in the middle;

[0027] Figure 9 for Figure 1 An exploded view of a portion of the rare earth waste treatment device shown.

[0028] Meaning of the reference numerals in the attached figures:

[0029] 100. Rare earth waste treatment device; 110. Outer shell; 110a. Treatment chamber; 110b. Liquid inlet; 110c. Liquid outlet; 110d. Slag discharge port; 111. Blocking part; 120. Driving component; 130. Rotating shaft; 140. Rotating drum; 140a. Internal space; 140b. First side end; 140c. Second side end; 150. Scraper; 160. Cleaning component; 161. Fitting part; 170. Connecting assembly; 171. Hollow shaft; 172. Connecting rod; 173. Connecting part; 174. Elastic component; 175. Guide component; 175a. First end; 175b. Second end; 175c. Guide surface; 180. Fixing component; 180a. Perforation; 180b. Annular oil storage chamber; 180c. Sealing chamber; 180d. Oil injection port; 181. Sealing ring. Detailed Implementation

[0030] Embodiments of this disclosure will now be described in more detail with reference to the accompanying drawings. While some embodiments of this disclosure are shown in the drawings, it should be understood that this disclosure can be implemented in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of this disclosure. It should be understood that the accompanying drawings and embodiments of this disclosure are for illustrative purposes only and are not intended to limit the scope of protection of this disclosure.

[0031] It should also be noted that, for ease of description, only the parts relevant to the invention are shown in the accompanying drawings. Unless otherwise specified, the embodiments and features described in this disclosure can be combined with each other.

[0032] It should be noted that the concepts of "first" and "second" mentioned in this disclosure are used only to distinguish different devices, modules or units, and are not used to limit the order of functions performed by these devices, modules or units or their interdependencies.

[0033] It should be noted that the terms "a" and "a plurality of" used in this disclosure are illustrative rather than restrictive, and those skilled in the art should understand that, unless otherwise expressly indicated in the context, they should be understood as "one or more".

[0034] The names of messages or information exchanged between multiple devices in the embodiments of this disclosure are for illustrative purposes only and are not intended to limit the scope of such messages or information.

[0035] The following will refer to the attached diagram. Figures 1 to 9 This disclosure will be described in detail with reference to the embodiments.

[0036] refer to Figures 1 to 3The rare earth waste treatment device 100 provided in some embodiments of this application includes: a housing 110, a drive component 120, a rotating shaft 130, a rotating drum 140, and a scraper 150.

[0037] Specifically, the outer casing 110 is provided with a processing chamber 110a for containing liquid to be magnetically separated. The outer casing 110 is provided with an inlet 110b and an outlet 110c that communicate with the processing chamber 110a. The liquid to be processed is introduced into the processing chamber 110a through the inlet 110b and discharged from the outlet 110c after magnetic separation.

[0038] The drive element 120 is fixedly connected to the housing 110. The drive element 120 may be, for example, a motor, or a combination of a motor and transmission forms such as gear transmission or belt transmission, etc., which will not be described in detail here. The rotating shaft 130 is connected to the drive element 120 so that the rotating shaft 130 can rotate under the drive of the drive element 120. The rotating drum 140 is at least partially located in the processing chamber 110a, and its interior has an internal space 140a for containing magnetic powder. The rotating drum 140 is preferably a metal product, such as iron or iron alloys, that is, the rotating drum 140 can be magnetic due to the magnetic powder filling the internal space 140a, so that the outer wall of the rotating drum 140 can be used to adsorb the magnetically adsorbable substances to be separated in the liquid to be processed. Specifically, there is a gap between the bottom of the rotating drum 140 and the bottom inner wall of the processing chamber 110a formed by the housing 110, so that the substances to be separated can be adsorbed onto the rotating drum 140 when the liquid flows through. The rotating shaft 130 passes through the internal space 140a and is coaxially fixedly connected to the rotating drum 140. That is, when the rotating shaft 130 rotates under the drive of the drive component 120, the rotating drum 140 rotates synchronously, so that the magnetic powder, flocculent matter and other substances (hereinafter collectively referred to as "substances to be separated") adsorbed on the outer wall of the bottom of the rotating drum 140 are removed from the liquid surface as the rotating drum 140 rotates.

[0039] The scraper 150 is fixedly connected to the outer casing 110, with one end of the scraper 150 approaching or contacting the upper half of the rotating drum 140. This allows the material to be separated to be blocked by the scraper 150 and scraped off the rotating drum 140 when it rotates to the upper half of the drum 140. More specifically, the scraper 150 is located at the end of the outer casing 110 away from the liquid inlet 110b, and the end of the outer casing 110 away from the liquid inlet 110b has a slag discharge port 110d. The scraper 150 is located between the liquid inlet 110b and the slag discharge port 110d, and is inclined, with the end near the slag discharge port 110d lower than the end near the liquid inlet 110b. This allows the material to be separated to slide down the surface of the scraper 150 after being scraped off, falling into the slag discharge port 110d for subsequent collection. In this way, the basic magnetic separation treatment of the liquid to be treated is achieved by the rare earth waste treatment device 100. Furthermore, in this design, the rotating drum generates magnetism through the magnetic powder inside, making the drum hollow and significantly reducing the weight of the equipment, which is beneficial for later maintenance.

[0040] To improve the efficiency of separation processing, refer to Figure 3 and Figure 4 Furthermore, some embodiments of this application further define the rare earth waste treatment apparatus 100 as including a cleaning component 160. The cleaning component 160 is fixedly connected to the outer casing 110. The cleaning component 160 is at least partially located within the internal space 140a, and one end of the cleaning component 160 contacts the upper half of the inner wall of the internal space 140a formed by the rotating drum 140.

[0041] During the rotation of the rotating drum 140, the magnetic powder adsorbed on the inner wall of the drum 140 can be scraped off by the cleaning member 160, which is in contact with the inner wall of the upper half of the drum 140. That is, as more magnetic powder is scraped off the inner wall of the drum 140, it will fall and concentrate at the bottom of the drum 140. This makes the magnetism at the bottom of the drum 140 stronger than that at the top, and since the bottom of the drum 140 is closer to the substances to be separated in the liquid being treated, the drum 140 has a stronger adsorption force on these substances. Correspondingly, the upper half of the drum 140 still has an attraction to the substances to be separated due to residual magnetism; therefore, the substances adsorbed on the drum 140 will continue to rotate with the drum 140. However, because the magnetism in the upper half of the drum 140 is relatively weaker, the substances to be separated are more easily scraped off the drum 140 near the scraper 150.

[0042] By adopting the above scheme, the magnetism of the magnetic powder is fully utilized, which can improve the impurity removal efficiency of the rare earth waste treatment device 100. At the same time, the material to be separated is less likely to clog the various components of the rare earth waste treatment device 100 and the gaps between the components, ensuring that the rare earth waste treatment device 100 can work stably and reducing the frequency of maintenance.

[0043] Specifically, refer to Figures 3 to 5 The rare earth waste treatment device 100 also includes a connecting assembly 170. The connecting assembly 170 is fixedly connected to the housing 110. The cleaning component 160 is connected to the connecting assembly 170 so that the cleaning component 160 is fixedly connected to the housing 110, preventing the cleaning component 160 from rotating synchronously with the rotating drum 140.

[0044] More specifically, refer to Figure 4The connecting assembly 170 includes a hollow shaft 171 and a connecting rod 172. The hollow shaft 171 is sleeved outside the rotating shaft 130 and is fixedly connected to the outer casing 110, thus forming a coaxial rotational connection between the hollow shaft 171 and the rotating shaft 130. When the driving member 120 drives the rotating shaft 130 to rotate, the hollow shaft 171 does not rotate. The connecting rod 172 is formed around the hollow shaft 171 and fixedly connected to it. One end of the connecting rod 172 has a connecting portion 173. The cleaning member 160 has a mating portion 161 at its other end, opposite to the end that contacts the inner wall of the rotating drum 140. The mating portion 161 and the connecting portion 173 engage with each other, so that the connecting assembly 170 and the cleaning member 160 form a detachable fixed connection. This configuration ensures that the cleaning component 160 is fixedly connected to the housing 110 via the connecting rod 172 and the hollow shaft 171, preventing the cleaning component 160 from rotating synchronously with the rotating drum 140.

[0045] In one specific alternative implementation, refer to Figure 5 The connecting part 173 can be a slide rail formed on / fixed to the end of the connecting rod 172 near the cleaning component 160. Correspondingly, the mating part 161 can be a groove provided on the cleaning component 160, with the slide rail embedded in the groove to achieve assembly of the cleaning component 160 and the connecting rod 172. Simultaneously, the cleaning component 160 can slide relative to the connecting rod 172 in some cases to facilitate removal. Because the cleaning component 160 contacts the inner wall of the rotating drum 140, the cleaning component 160 can be made of plastic materials such as nylon or acetal. This avoids or reduces wear on the inner wall of the rotating drum 140 by abrading the surface of the cleaning component 160 in contact with the inner wall. Furthermore, the cooperation between the groove and the slide rail allows for easy removal of the cleaning component 160 from the connecting rod 172, facilitating maintenance.

[0046] It is understandable that the connecting part 173 can be a groove formed on the end of the connecting rod 172 near the cleaning part 160, and the mating part 161 can be a slide rail formed on / fixed to the cleaning part 160. The assembly of the cleaning part 160 and the connecting part can be realized by the fitting of the groove and the slide rail, and the cleaning part 160 can be easily installed and removed.

[0047] In some embodiments, reference Figure 5The rare earth waste treatment device 100 also includes an elastic element 174. The elastic element 174 is disposed between the connecting portion 173 and the mating portion 161. By applying pressure to the mating portion 161 through the elastic element 174, the cleaning component 160 can maintain sufficient contact with the inner wall of the rotating drum 140, thereby extending the service life of the cleaning component 160 and further reducing the maintenance frequency while improving magnetic separation efficiency. Considering that the internal space 140a is filled with magnetic powder, the elastic element 174 is preferably made of a soft rubber material, such as a rubber product, to prevent the process of magnetic powder falling to the bottom of the rotating drum 140 from being obstructed by the elastic element 174 adsorbing the magnetic powder.

[0048] Correspondingly, the hollow shaft 171 and the connecting rod 172 can also be made of materials that cannot be magnetically attracted (such as plastic).

[0049] In some embodiments, the length direction of the connecting rod 172 is parallel to the radial direction of the rotating drum 140. The cleaning member 160 is connected to the end of the connecting rod 172 along its length direction away from the hollow shaft 171. (See reference...) Figure 6 Considering that if the cleaning component 160 contacts the inner wall of the rotating drum 140 relatively close to the middle of the rotating drum 140 in the vertical direction, the magnetic powder scraped off by the cleaning component 160 is easily re-adsorbed onto the inner wall of the rotating drum 140 before falling to the bottom of the rotating drum 140, thus the increase in the attraction force of the material to be separated at the bottom of the rotating drum 140 is not significant. Conversely, if the cleaning component 160 contacts the inner wall of the rotating drum 140 too high, or if the contact point is located on the side of the rotating drum 140 near the scraper 150, the magnetic powder is easily attracted by the rotating shaft 130 when falling, or the falling speed of the magnetic powder is slowed down, similarly limiting the increase in magnetic attraction force at the bottom of the rotating drum 140. In some embodiments, the angle between the length direction of the connecting rod 172 and the horizontal direction is limited to a range of 45° to 70°, so that the contact position between the cleaning component 160 and the inner wall of the rotating drum 140 is relatively suitable, allowing the scraped magnetic powder to fall to the bottom of the rotating drum 140 more quickly and fully.

[0050] In some embodiments, reference Figure 6 The connecting assembly 170 further includes a guide 175. The guide 175 is formed / fixed between the hollow shaft 171 and the connecting rod 172. The guide 175 has a first end 175a that contacts the cleaning member 160, a second end 175b located below the first end 175a, and a guide surface 175c formed between the first end 175a and the second end 175b. The guide surface 175c is located below the cleaning member 160. (Reference) Figure 6 The guide surface 175c is inclined, and the second end 175b is closer to the middle of the rotating drum 140 in the left-right direction as shown in the figure, relative to the first end 175a.

[0051] Using the above solution, the falling magnetic powder and the rotating shaft 130 can be further isolated by the guide 175. In this way, even if the rotating shaft 130 has an attractive force on the magnetic powder, the magnetic powder can fall to the bottom of the rotating drum 140 along the surface of the cleaning part 160 and / or the inclined guide surface 175c. Moreover, the guide surface 175c has a relatively small effect on slowing down the falling speed of the magnetic powder.

[0052] In some embodiments, reference Figures 7 to 9 The rare earth waste treatment device 100 also includes a fixing member 180. The fixing member 180 is fixedly connected to the outer casing 110, and the connection method is not limited to, for example, threaded connection, pin fixing, or snap-fit. The internal space 140a is open at the first side end 140b of the outer casing 110. The fixing member 180 is rotatably connected to the first side end 140b of the rotating drum 140. Specifically, the fixing member 180 can be sleeved on the outside of the first side end 140b of the rotating drum 140, thereby supporting the rotating drum 140 and closing the open portion of the accommodating space at the first side end 140b. The fixing member 180 has a through hole 180a communicating with the internal space 140a. The cleaning member 160 is inserted into the internal space 140a through the through hole 180a. One end of the cleaning member 160 extends out of the internal space 140a from the through hole 180a and is fixedly connected to the fixing member 180, thereby fixing the cleaning member 160 to the outer casing 110. The connection method between the cleaning component 160 and the fixing component 180 can be such as threaded connection, pin fixing, snap-fit, etc., and the cleaning component 160 can be removed from the fixing component 180. There are no restrictions on this.

[0053] In some embodiments, the drive member 120 is located at the second side end 140c of the housing 110 opposite to the first side end 140b. That is, the drive member 120 and the fixing member 180 are located at opposite ends of the housing 110. This arrangement allows the cleaning member 160 to be easily removed from the fixing member 180 while the drum 140 is rotating, and provides a larger operating space, thus facilitating maintenance. After the cleaning member 160 is removed, the normal rotation of the drum 140 is not affected. Therefore, as long as the cleaning member 160 is replaced in a timely manner, the separation efficiency of the rare earth waste treatment device 100 can be kept relatively stable. The drum 140 can also continue to work for a period of time while the cleaning member 160 is removed, reducing the impact on the normal operation of the rare earth waste treatment device 100.

[0054] In some embodiments, reference Figure 8The fixing member 180 has an annular oil reservoir 180b and a sealing cavity 180c on its inner side. The annular oil reservoir 180b is connected to the side of the sealing cavity 180c away from the driving member 120. A sealing ring 181 is fixedly installed in the sealing cavity 180c, which can be used as the contact part between the fixing member 180 and the rotating drum 140. The annular oil reservoir 180b can be filled with lubricating oil, and the lubricating oil can flow to the sealing ring 181 to lubricate the sealing ring 181, improve the service life of the sealing ring 181, and reduce wear on the surface of the rotating drum 140. The fixing member 180 is also provided with an oil inlet 180d that communicates with the annular oil reservoir 180b. The oil inlet 180d can be blocked and closed under normal circumstances, and can be opened to replenish lubricating oil into the annular oil reservoir 180b.

[0055] Optionally, a bearing can be provided between the fixed member 180 and the rotating drum 140 to support the rotating drum 140. In this case, the bearing can be located on the side of the sealing ring 181 near the annular oil reservoir 180b, so that the sealing ring 181 can protect the bearing. The bearing is not shown in the attached drawings and will not be described in detail here.

[0056] In some embodiments, reference Figure 6 The inlet 110b and outlet 110c are respectively located at opposite ends of the outer casing 110. A blocking portion 111 protrudes from the bottom inner wall of the outer casing 110, near the inlet 110b. The blocking portion 111 is located on the side of the outer casing 110 near the fixing member 180, and is situated on the side of the sealed cavity 180c away from the annular oil storage cavity 180b. Using this design, as the liquid to be treated flows from the inlet 110b to the gap between the bottom of the rotating drum 140 and the bottom inner wall of the processing chamber 110a, the blocking portion 111 guides the flow of the mixed liquid, reducing the likelihood of the substances to be separated in the liquid flowing into the sealed cavity 180c, thereby further extending the lifespan of the sealing ring 181.

[0057] The above description is merely a selection of preferred embodiments of this disclosure and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of the invention involved in the embodiments of this disclosure is not limited to technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the above-described inventive concept. For example, technical solutions formed by substituting the above-described features with (but not limited to) technical features with similar functions disclosed in the embodiments of this disclosure.

Claims

1. A rare earth waste treatment device, comprising: The outer casing has a processing chamber. The driving component is fixedly connected to the housing; A rotating shaft is connected to the driving element to rotate under the drive of the driving element; The rotating drum is at least partially located within the processing chamber; Its features are: The rare earth waste treatment device also includes: The cleaning component is fixedly connected to the housing; The rotating drum has an internal space for accommodating magnetic powder; the rotating shaft passes through the internal space and is coaxially and fixedly connected to the rotating drum; the cleaning component is at least partially located in the internal space, and one end of the cleaning component is in contact with the upper half of the inner wall of the internal space formed by the rotating drum. The rare earth waste treatment device also includes: The connecting component is fixedly connected to the housing; The cleaning component is connected to the connecting assembly to fix the cleaning component to the housing; The connection component includes: A hollow shaft is fitted over the rotating shaft; A connecting rod is formed around the hollow shaft / fixedly connected to the hollow shaft; The hollow shaft is fixedly connected to the outer shell; one end of the connecting rod is provided with a connecting part; the other end of the cleaning component, which is opposite to the end that contacts the inner wall of the rotating drum, is provided with a mating part; the mating part and the connecting part are fitted together so that the connecting assembly and the cleaning component form a detachable fixed connection. The connection component also includes: A guide element is formed or fixedly connected between the hollow shaft and the connecting rod; The guide has a first end that contacts the cleaning member, a second end located below the first end, and a guide surface formed between the first end and the second end; the guide surface is located below the cleaning member.

2. The rare earth waste treatment device according to claim 1, characterized in that: The length direction of the connecting rod is parallel to the radial direction of the rotating drum; the cleaning component is connected to the end of the connecting rod away from the hollow shaft along its length direction; the angle between the length direction of the connecting rod and the horizontal direction ranges from 45° to 70°.

3. The rare earth waste treatment device according to claim 1, characterized in that: The rare earth waste treatment device further includes an elastic element disposed between the connecting part and the mating part.

4. The rare earth waste treatment device according to any one of claims 1 to 3, characterized in that: The rare earth waste treatment device further includes: a fixing member, which is fixedly connected to the outer shell; wherein the internal space is open at a first side end of the outer shell; the fixing member is rotatably connected to a first side end of the rotating drum; the fixing member is provided with a through hole communicating with the internal space; and the cleaning member is inserted into the internal space through the through hole.

5. The rare earth waste treatment device according to claim 4, characterized in that: The drive unit is located at the second side of the housing opposite to the first side.

6. The rare earth waste treatment device according to claim 5, characterized in that: The fixing component has an annular oil storage cavity and a sealing cavity on its inner side; the annular oil storage cavity is connected to the side of the sealing cavity away from the driving component; a sealing ring is fixedly installed in the sealing cavity.

7. The rare earth waste treatment device according to claim 6, characterized in that: The outer casing has an inlet and an outlet at opposite ends that communicate with the processing chamber. A blocking part is provided at the bottom inner wall of the outer casing near the inlet. The blocking part is located on the side of the outer casing near the fixing member and is located on the side of the sealing cavity away from the annular oil storage cavity.

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